F28F 3/02
Elements or assemblies thereof with means for increasing heat-transfer area
Official title: Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations (F28F3/08 takes precedence)
F28F3/02 (Elements or assemblies thereof with means for increasing heat-transfer area) appears on 3,076 US grants and 3,936 published applications in this corpus.
Search patents in F28F- Granted patents
- 3,076
- Published applications
- 3,936
- Assignees
- 1,496
- Inventors
- 7,594
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 13 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 12 | 0 |
| 1981 | 12 | 0 |
| 1982 | 7 | 0 |
| 1983 | 14 | 0 |
| 1984 | 19 | 0 |
| 1985 | 8 | 0 |
| 1986 | 10 | 0 |
| 1987 | 12 | 0 |
| 1988 | 9 | 0 |
| 1989 | 17 | 0 |
| 1990 | 14 | 0 |
| 1991 | 28 | 0 |
| 1992 | 20 | 0 |
| 1993 | 21 | 0 |
| 1994 | 26 | 0 |
| 1995 | 26 | 0 |
| 1996 | 41 | 0 |
| 1997 | 34 | 0 |
| 1998 | 53 | 0 |
| 1999 | 39 | 0 |
| 2000 | 52 | 0 |
| 2001 | 88 | 50 |
| 2002 | 83 | 96 |
| 2003 | 82 | 105 |
| 2004 | 72 | 115 |
| 2005 | 85 | 134 |
| 2006 | 87 | 136 |
| 2007 | 70 | 159 |
| 2008 | 42 | 122 |
| 2009 | 50 | 143 |
| 2010 | 60 | 145 |
| 2011 | 64 | 126 |
| 2012 | 71 | 144 |
| 2013 | 81 | 140 |
| 2014 | 72 | 191 |
| 2015 | 83 | 146 |
| 2016 | 99 | 197 |
| 2017 | 110 | 193 |
| 2018 | 144 | 200 |
| 2019 | 194 | 246 |
| 2020 | 160 | 199 |
| 2021 | 195 | 199 |
| 2022 | 149 | 174 |
| 2023 | 119 | 161 |
| 2024 | 136 | 142 |
| 2025 | 112 | 156 |
| 2026 | 66 | 117 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cold plate and method for manufacturing cold plate6 Oct 2026US 12,753,978 B2Fujikura Ltd.
- Designs and applications of a low-drag, high-efficiency microchannel polymer heat exchanger6 Oct 2026US 12,753,981 B2The Regents of the University of California
- Cooling device29 Sep 2026US 12,747,917 B2Bitmain Technologies Inc.
- Battery housing part, battery module, and method for producing a battery housing part29 Sep 2026US 12,749,736 B2Robert Bosch GmbH
- Interlocking plate heat exchanger22 Sep 2026US 12,741,309 B2Rtx Corporation
- Liquid-cooling heat exchange device1 Oct 2026US 2026/0298556 A1Thermasol Technology Co., Ltd.
- Equalizing flow manifold with bernoulli-derived hierarchical geometry, asymmetric inlet/outlet architectures, and modular polygonal flow units, and cooling apparatus including same24 Sep 2026US 2026/0287276 A1HRL Laboratories, LLC
- Secondarily applied cold side features for cast heat exchanger24 Sep 2026US 2026/0287277 A1Rtx Corporation
- Infrared heating system for hvac&r system24 Sep 2026US 2026/0292937 A1Tyco Fire & Security GmbH
- Cooking system and heat exchanger with combustion chamber17 Sep 2026US 2026/0271942 A1
Most cited
By later US patents
- Apparatus for absorbing and dissipating excess heat generated by a system553US 7,593,230 B2Sensys Medical, Inc. · 2009
- Heat sink for cooling a heat producing element and application411US 5,504,650 AFujitsu Limited · 1996
- Medical article having fluid control film323US 6,420,622 B13M Innovative Properties Company · 2002
- Heat exchange apparatus227US 6,019,165 A2000
- Fluid-cooled heat sink with turbulence-enhancing support pins195US 6,729,383 B1The United States of America as represented by the Secretary of the Navy · 2004